Improvement in vaporizers



Urrn ffy.

PAUL GIFFARD, or rAnrs, FRANCE.

IMPROVEMENT IN VAPORIZERS.

Specification forming part of Letters Patent No. 21 1,234,l dated January 7, V1879; application led August 24, 1878.

To all whom it may concern:

Be it known that I, PAUL GIFFARD, of

`Paris, Republic of France, have invented certain Improvements in Instruments for Atomizing Liquids; and I do hereby declare that the following is a full, clear, andeXact description of the same, reference being had to the accompanying drawings, in which- Figure l is a vertical section ot'V the instrument; Fig. 2, a sectional plan on the line 1 2 and Figs. 3, 4, and 5, detached views of parts of the instrument.

This invention relates to atomizing instru ments, such as are used for disinfecting rooms, or foradministering medicines by inhalation, or other purposes, the improvements relating especially to that class of instruments in which a liquid-reservoir and a pressure-pump are employed.

The main object of the invention is to so construct and arrange the parts as to produce a compact', self-contained, and portable instrument, from which a continuous, steady, and widely-diii'used spray may be obtained with comparatively slight exertion.

A is a reservoir, preferably made of metal, and capable of resisting the desired air-pressure, a cover, B, being screwed or otherwise secured to the upper edge of the reservoir. On this cover is a device which serves the twofold purpose of a stopper and a safetyvalve, by which the pressure in the reservoir is restricted. This device consistsof the tubular stud a., screwed tightv into the cover, and

-havin g at its top the annular seat of the valve D, the stem of the latter being guided by a cap, C, which is screwed onto the stud, and contains the valve and a spring, F, for depressing the same. On unscrewing and detaching the cap it will carry with it the valve, leaving the opening in the stud exposed for the passage through it of the liquid, with which the reservoir :must be replenished from time to time.

The portion of the valve which bears on the seat consistsof a washer, of leather or rubber, H, securely set into a recess in the metal portion of the valve, thereby insuring the close iitting of the same.

To a hollow stud screwed into the cover B is connected, by means of a screw-coupling,

J, the tube P, with which communicates the pipe K, extending downward nearly to the but a graduated groove, 2, (best observed in the perspective view, Fig.5,) is cut in the circumference of the plugthat is, a groove widest and deepest where it communicates with the interior of the tube P, and gradually decreasing in size, and vanishing as it approaches the orifice w in the socket r.

By this arrangement I am enabled to obtain a very delicate adjustment of the comA munication between the interior of the tube P and the said orice w, and to regulate the jet escaping from the orice with great nicety.

When the pump described hereinafter is op erated, a jet of spray will be forcibly ejected from the orifice, and will be widely disseminated.

I sometimes combine with. the atomizingcock a convex plate, l, for the jet to strike against, Figs. l and 3, or in place of the plate a disk, W, of wire-gauze, Fig. 4, to insure a more thorough dissemination of the spray, and the plate or disk may be contained within an adjustable cylinder, L, and such liquid as may drip from the same is caught by a disk, N, and conveyed therefrom through a waste pipe, o, into any suitable receptacle prior to being returned to the reservoir.

An air-pu1np forms part of the instrument, this pump consisting of a barrel, Q, with a piston similar to that for which Letters Patent No. 122,825, July 16, 1872, were granted to me, the piston-rod being guided by a perforated cap, p', secured to the top of the barrel, and the top of the rod being furnished with a suitable operating handle or knob, t. Into the bottom of the barrel is screwed a plug, V, having a small central opening communicating with the chamber containing the foot-valve X, in which is set a ring, of leather or rubber, adapted to the seat within the valvechamber, against which the valve is by the spiral spring x.

pressed i The valve is sufficiently loose in the chamber, and the valve-stem sufficiently loose in its guide, to permit the free passage of the compressed air into the reservoir.

The reservoir may be enameled, tinned, or otherwise protected on its inner surface, to resist the injurious Yact-ion of any fluids of a corrosive character which may be used.

rlwo or more atomizing-eocks may be used in connection with one reservoir, and the temperature of the liquid in this reservoir may be regulated by placing the said reservoir in water heated to the degree desired.

I claim as my invention- 1. The combination of the reservoir A, the pump Q, the valve X, the pipe K, tube P, and atomizing-cock I, all arranged substantially as described, so as to form a self-contained portable apparatus for atomizing liquids by the direct pressure of air, as set forth.

2. Thewithin-describedatomizing-cock,con-

sisting of a socket, r, communicating with the reservoir, and having an orifice, r, and a plug,

f PAUL GIFFARD.

Vitnesses A. DENoYsoN, G. PASCAL. 

